org.jdom2.contrib.input.scanner.ElementScanner#parse(InputSource) fails with java.lang.NullPointerException: No parent for filter

[seberget]

When trying to use the ElementScanner it fails with the following exception:
Exception in thread "main" java.lang.NullPointerException: No parent for filter at org.xml.sax.helpers.XMLFilterImpl.setupParse(XMLFilterImpl.java:714) at org.xml.sax.helpers.XMLFilterImpl.parse(XMLFilterImpl.java:356) at org.jdom2.contrib.input.scanner.ElementScanner.parse(ElementScanner.java:482) at ElementScannerTest.main(ElementScannerTest.java:39)